Receiving-box for pneumatic dispatch-tubes



(No Model.)

L. G. BOSTEDO & E. A. PORDYCIL' RECEIVING BCX FOR PNEUMATIC DISPATCHTUBES.

No. 525,583. Patented Sept. 4, 1894 TH: mums r-crzns c0. MTO-LITNQ"WASNINGTON, o. c.

UNITED STATES PATENT ()FFIGE.

LOUIS G. BOSTEDO AND EDMOND A; FORDYCE, OF CHICAGO, ILLINOIS.

RECEIVING-BOX FOR PNEUMATIC DISPATCH-TUBES.

SPECIFICATION forming part of Letters Patent No. 525,583, datedSeptember 4, 1894.

Application filed September 4, 1393- I Serial No. 484.761. (N0 model.)-

To all whom it may concern:

Be it known that we, LOUIS G. BOSTEDO and EDMOND A. FoRDYoE, of Chicago,Illinois, have invented certain new and useful Improvements inReceiving-Boxes for Pneumatic Dispatch-Tubes, of which the following isa specification.

This invention relates to a receiving box for a pneumatic dispatch tubeof the class which is used to carry cash between the salesmens stationsand the cashiers station in mercantile houses.

The box which is hereinafter described is applicable for use either atthe cashiers station or at the salesmens stations, and some of thefeatures thereof are adapted for use in boxes in intermediate positionsin the line and the box may have a movable switch. We have shown it,however, as adapted to the cashiers station. These devices, which aresometimes called receiving boxes, have been made in various ways, andthey usually comprise a branch tube connected with the receiving tube ofthe system and terminating with an open end to which a hinged door isapplied, 'and which door is automatically opened by the impact of .thecarrier thereon. The closing of the end of the branch tube by the door,we have found permits the forming of an air cushion above said doorwhich is often of such strength or density as to sustain the carrier andprevent its proper discharge. Our improvements provide a terminal inwhich a relief or vent is furnished to prevent this air cushion.Afurther difficulty which has been encountered in the operation of thesepneumatic dispatch tube systems is due to the fact that when the door isopened by the impact of the carrier thereon, the air rushes in throughthe door opening, there being a strong current induced by the passage ofair through the main tube under suction. The vent above describedpermits of the escape of this air without passing through the branchtube in which the carrier is descending, and therefore the inducedcurrent does not operate to hold the carrier in the branch nor preventits discharge. We have also further improved theconstruction of the;boxby applying therein a regulating valve which can angular in form. Thereceiving or suction tube has been projected through such boxes with abranch or switch therein to deflect the carrier to the dischargeaperture. It is diflicult to make these wooden boxes air tight, and theyare unsightly even when carefully and expensively constructed. WVemakethe box from a single, integral casting which is interposed in themain tube and provide in this casting a section to which the separatedends of the main tube is connected, at delivery branch having a doorpivoted thereto at its end, and a vent passage between the lower 'end ofthe branch above the door and the main tube section.

l In the accompanying drawings, Figurel is a sectional elevation throughthe box showing the ends of the main pipe connected thereto and showingthe valve and its adj usting mechanism in elevation; and Fig. 2 is asectional plan-below the line 22 of Fig. 1.

I In-the drawings,A A represent the separated ends of the main tubewhich are connected to the box. The latter is substantially triangularin outline and is cast integral hav-,

ing the straight section B and the curved branch or discharge pipe Gwhich unite in a stem D which is connected to the section A of the mainpipe. The lower end of the branch 0 is connected with the section B by"the semi-cylindrical pipe E. The lower end of the branch 0 is open andthe hinged door F, which is hinged to the bottom wall of thesemi-cylindrical pipe E, closes the discharge 'opening'of the branch,said door having an actuating spring to render it self-closing.

A valve G carried upon a short stud H, mounted upon a threaded bolt Ithreaded in the post J, slides onthe fiat bottom wall of thesemi-cylindrical pipe E and is adapted to be projected into the bore ofthe sectionB so as to regulate the amount of airpassing ftherethrough;or, in other words, to regulatev the force of the current. Thisregulation will I do passing through a long pipe being greater than inpassing through a short pipe, the valve furnishes means for equalizingthe force of the blast in the two pipes.

In operation the carrier passes to the box in the direction indicated bythe arrow and is deflected by the guide K into the branch tube, the

air current passing straight through the section B. The carrier beingdelivered with considerable force strikes the door F and opens it,passing out. Now, if there were no provision for permitting the airwhich passes into the.

tube 0 to pass to the suction tube, an air cushion would be formed abovethis door, but the semi-cylindrical pipe E furnishes an open passage orcommunication which prevents the formation of such air cushion. When thedoor is opened by the impact of the carrier thereon, the induced currentof air rushing in through the opening would, in the absence of thepassage furnished by the pipe E, tend to impede the delivery of thecarrier, if not to wholly arrest it, but when the door opens the airwhich enters through the opening rushes through the pipe E into thesuction pipe, taking of course the shorter course through said piperather than the longer route through pipe 0 and thence to the suction.

It will be observed that the door is hinged at a point between the innerside of the branch tube C and the section B. This is done for tworeasons: first, to give a greater leverage on the door so that it maythe more readily open by the impact of the carrier thereon; and, second,to permit the air which enters through the open door to pass moredirectly to the suction.

It will be observed by reference to the dotted lines in Fig. 1 of thedrawings that there is a triangular space above the door when the sameis open, so that the air may rush in and pass directly and by a shortcourse into the tube A.

The box may be cast all in one piece, or it may be parted vertically orcast in matinghalves. The pipe 0 is preferably curved from end to end,first, because its delivery end is thus brought into a horizontal plane;and, second, because the curved form acts to retard the carrier to someextent and breaks the force of the discharge. The precise form of theparts is not essential. The pipes B and C are shown as being cylindricaland the pipe E as semi-cylindrical, its flat bottom adapting it to theflat door.

The relief or vent is applicable to receiv- 'having a curved branchhaving an open end Without limiting ourselves to precise details ofconstruction, we claim- 1. A receiving box for pneumatic dispatch tubesadapted to be connected to the recoil- 8e ing and suction tubes, havinga curved dis V l charge branch, and a vent or relief passagecommunicating with the branch and withklie suction tube, substantiallyas described.

2. A receiving box for pneumatic dispatclm} tubes adapted to beconnected with the sepirated ends of the receiving and suction tub,

through which the carrier may be delivered, a pipe or passage connectingthe branch its open end with the suction tube, and a hinged door forclosing the end of the branch, 5}. substantially as described. I

3. A receiving box for pneumatic dispatch tubes adapted for connectionwith the sells-= 9? rated ends of the receiving and suction tubes andhaving a curved branch with an open end, a pipe or passage formed with'aflat bottom wall and communicating with the lower end of the branch andwith the suction'tnbo, m an opening in said bottom wall anda hinged doorapplied to said opening, substantiallyal described.

4:. A receiving box for pneumatic dispatch tubes adapted for connectionwith the recoiv- 1.; ing and suction tubes and having a curved branchwith an open end, aipe or passage 1 7 formed with a flat bottom wa lcommunicating with the lower end of the branch and with a the suctiontube, an opening in said bottom n) wall, a hinged door applied to saidopening, the hinged end of the door being arran intermediate the line ofthe inner wall of the branch and the suction tube, substantially asdescribed. :13

5. A receiving box for pneumatic dispatch tubes cast integral and ofsubstantially triangular form having a straight section adapted to beconnected with the separated eudso! the dispatch tube, a curveddischarge branch 4' with its opening arranged at right angles to thewall of the dispatch tube section, aguide arranged at the junction ofsaid sections, a pipe or passage communicating with the branch at itslower end and with the auction I end of the 'main pipe section, and ahinged door in the lower wall of said pipe or passage, substantially asdescribed.

6. A receiving box fora dispatch tube system constructed to provide astraight m :89

and adapted to be interposed in and form a the passage ofairtherethrougb, substantially part of. the dispatch tube, a curvedbranch for as described.

delivering the carrier, a pipe or passage con- LOUIS G. BOSTEDO. nectingthe lower end of the branch with the EDMOND A. FORDYOE. suction of thedispatch tube, and a movable Witnesses:

valve arranged in said vent and projected FREDERICK O. GOODWIN,

into the dispatch tube whereby to regulate L. F. MOOREA.

